Improvement in injectors



S. RUE.

Injectors. N o. 145,969. Patented vez. 30,1873.

Ulvrrnn-v STATES v`Prriwarr OFFICE.

SAMUEL RUE, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN INJECTORS.

Specification forming pait of Letters Patent No. 145,969, dated December30,1873; application filed December 9, 1873.

To all whom it may concern:

Be it known that I, SAMUEL RUE, of the city and county of Philadelphiaand State of Pennsylvania, have invented a new and useful Improvement inInjectors; and I do hereby declare the following to be a clear and exactdescription of the nature thereof, ,suiicient to enable others skilledin the art to which my invention appertains to fully understand, make,

and use the same, reference being had to the accompanying drawingsmaking part of this specification, in which- Y Figure l is a centrallongitudinal section of the device embodying my invention. Fig. 2 is latransverse section in line x fc, Fig. 1. Fig. 3 is a transverse sectionin line y y, Fig. l.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention consists in a mode of connecting the combining anddelivery tubes, whereby the eectiveness of the injector is gre( tlyincreased, and its size materially shortened.

Referring to the drawings, A represents the bed-plate or casting, and Band C represent hollow heads, constituting chambers at or near oppositeends of the eastin g. Extending from one chamber to the other is thecombiningtube H, which has a longitudinal sliding motion, so as to beadjustable relatively to the steam-plug, and controlling theproportionate amounts of Water and steam. One end of said tube projectsinto the chamber B, and the other end projects into the chamber C, orinto a tubular passage, T, consisting of a shell or tube, which extendshorizontally and longitudinally from opposite inner walls of the head C,said passage having an opening, T which is adapted to be covered anduncovered by a valve, V, whose siem plays in a screw-plug placed in theupper end of the head C. D represents the steam pipe or plug at one endof the injector, and projecting into the chamber B. Dl represents a pipeor plug, called the delivery-tube,77 which projects into the injectoropposite to pipe or plug D, and leads to the steam boiler or generator.The said pipe or plug D has formed with it a prolongation, S, which ispassed through the chamber C, or the tubular passage T, and projectsinto, or is telescoped77 with, the adjacent portion of the tube H, whosebore is sufficiently enlarged to receive the said prolongation, andleave a tubular passage T exists, the water raises the valve V before itreaches t-he overiiow. As soon as water appears at the mouth of theoverflow, steam is turned on at I, slowly until it catches the water,and then at full head, the lever M being pushed either forward orbackward until neither steam nor water shows at the overflow. Thegenerator is then being supplied or fed.

It will be seen that by telescopin g the prolongation S of the tube Dland tube H, the length of the injector is materially shortened. Inaddition to this, the effectiveness of the injector is increased, as thecombining and delivery tubes can be made relatively longer or shorterwithout changing the size of the other parts.

The greater the distance the prolongation S of the plug or tube Dprojects into the tube H, the shorter is the combining-tube, and longerthe delivery-tube.

It' the combining-tube is shortened, and the delivery-tube islengthened, the power of the injector is decreased.

If the combining-tube is lengthened, and the delivery-tube is shortened,the power of the injector is increased.

These provisions are important, as in some cases a boiler is required tofurnish a large amount of steam at a low pressure, and it, therefore,needs a rapid supply of Water. In other cases, only a small amount ofsteam at a high pressure is required, and consequently less water. Achange in the proportionate lengths of the combining and delivery tubes,as above, will allow of the samesized injector being used in variousconditions.

Having thus described my invention, what R between the tubes, incombination with the I claim es new, und desire to seeure by Lettersoverow and the water und steam supply, sub` Patent, is stantially as andfor the purpose set forth.

l. In :in injector the deliver -tube and the eombinin g-tubedlavng atelesegrpie connection, SAMUEL RUE' substantially as and for the purposeset forth. Witnesses:

' 2. The combining-tube H, with the delivery- JOHN A. WIEDERSHEIM,

tube D projecting thereinto, und the space G. S. HETHERINGTON.

